ASTM D6045-04
(Test Method)Standard Test Method for Color of Petroleum Products by the Automatic Tristimulus Method
Standard Test Method for Color of Petroleum Products by the Automatic Tristimulus Method
SIGNIFICANCE AND USE
Determination of the color of petroleum products is used mainly for manufacturing control purposes and is an important quality characteristic because color is readily observed by the user of the product. In some cases the color may serve as an indication of the degree of refinement of the material. When the color range of a particular product is known, a variation outside the established range may indicate possible contamination with another product. However, color is not always a reliable guide to product quality and should not be used indiscriminately in product specifications.
SCOPE
1.1 This test method covers the automatic determination of color of a wide variety of petroleum products such as undyed motor and aviation gasoline, aviation turbine fuels, naphthas, kerosine, pharmaceutical white oils, diesel fuel oils, heating oils, and lubricating oils by the automatic tristimulus method. This test method correlates to Test Method D 156 and Test Method D 1500 as calculated by the instrumentation.
Note 1 - With the appropriate sample handling, this test method would apply to petroleum waxes, but they were not used in the round robin, and the precision of this test method with regard to waxes is unknown.
1.2 This test method reports results in terms of Test Method D 156 or Test Method D 1500.
1.3 This test method has a one-to-one correlation for the entire range of Test Method D 1500 ASTM Color and for the range from 0 to +30 for Test Method D 156 Saybolt color.
1.4 This test method does not apply to solid samples, petroleum products containing dye, and petroleum products having extreme fluorescence.
1.5 This test method does not apply to cloudy samples. Such samples shall be filtered so they are clear before measuring.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D6045 – 04
Standard Test Method for
Color of Petroleum Products by the Automatic Tristimulus
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Method
This standard is issued under the fixed designation D6045; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* D2500 Test Method for Cloud Point of Petroleum Products
D4057 Practice for Manual Sampling of Petroleum and
1.1 This test method covers the automatic determination of
Petroleum Products
color of a wide variety of petroleum products such as undyed
E284 Terminology of Appearance
motor and aviation gasoline, aviation turbine fuels, naphthas,
E308 Practice for Computing the Colors of Objects by
kerosine, pharmaceutical white oils, diesel fuel oils, heating
Using the CIE System
oils, and lubricating oils by the automatic tristimulus method.
2.2 Energy Institute Standard:
This test method correlates to Test Method D156 and Test
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IP 17 Determination of Colour—Lovibond Tintometer
Method D1500 as calculated by the instrumentation.
NOTE 1—Withtheappropriatesamplehandling,thistestmethodwould 3. Terminology
apply to petroleum waxes, but they were not used in the round robin, and
3.1 Definitions:
the precision of this test method with regard to waxes is unknown.
3.1.1 ASTM color—the name of an empirical scale of
1.2 This test method reports results in terms ofTest Method
expressing of the color of a petroleum liquid darker than
D156 or Test Method D1500.
Saybolt color based on a scale of 0.5 (lightest) to 8.0 Dil
1.3 This test method has a one-to-one correlation for the
(darkest) and determined by Test Method D1500.
entire range of Test Method D1500 ASTM Color and for the
3.1.2 CIE—the abbreviation for the French title of the
range from 0 to+30 for Test Method D156 Saybolt color.
International Commission on Illumination, or Commission
1.4 This test method does not apply to solid samples,
Internationale de l’Eclairage. E284
petroleum products containing dye, and petroleum products
3.1.3 CIE Standard Illuminant C—Colorimetric illuminant,
having extreme fluorescence.
representing daylight with a correlated color temperature of
1.5 Thistestmethoddoesnotapplytocloudysamples.Such
6774 K, defined by the CIE in terms of a relative spectral
samples shall be filtered so they are clear before measuring.
power distribution. E284
1.6 This standard does not purport to address all of the
3.1.4 CIE 1931 standard observer—ideal colorimetric ob-
safety concerns, if any, associated with its use. It is the
server with color matching functions x(l), y(l), z(l) corre-
responsibility of the user of this standard to establish appro-
spondingtoafieldofviewsubtendinga2°angleontheretina;
priate safety and health practices and determine the applica-
commonly called the “2° Standard Observer.” E284
bility of regulatory limitations prior to use.
3.1.5 Saybolt color—the name of an empirical scale for
expressing of the color of a clear petroleum liquid based on a
2. Referenced Documents
scale of−16 (darkest) to+30 (lightest) and determined byTest
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2.1 ASTM Standards:
Method D156.
D156 TestMethodforSayboltColorofPetroleumProducts
3.1.6 tristimulus values—The amounts of three specified
(Saybolt Chromometer Method)
stimuli required to match a color.
D1500 TestMethodforASTMColorofPetroleumProducts
3.1.6.1 Discussion—In the CIE system, they are assigned
(ASTM Color Scale)
the symbols X, Y, and Z. E284
4. Summary of Test Method
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This practice is under the jurisdiction ofASTM Committee D02 on Petroleum
4.1 The sample is poured into the glass sample container,
ProductsandLubricantsandisthedirectresponsibilityofSubcommitteeD02.05on
and the container is placed into the light path of the automatic
Properties of Fuels, Petroleum Coke and Carbon Material.
Current edition approved Nov. 1, 2004. Published November 2004. Originally instrument.Atransmittancemeasurementisperformedinorder
approved in 1996. Last previous edition approved in 2002 as D6045–02. DOI:
to determine the CIE tristimulus values (under CIE Standard
10.1520/D6045-04.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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Standards volume information, refer to the standard’s Document Summary page on Methods for Analysis Testing, available from Energy Institute, 61 New
the ASTM website. Cavendish St., London, WIG 7AR, U.K.
*A Summary of Changes section appears at the end of this standard.
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D6045 – 04
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